How does the muscle fit compare to other brands' slim fit? Should I size up if I prefer a slightly looser fit?

Muscle fit is tighter than slim fit overall — it's designed to accentuate an athletic build with a closer fit through the chest, shoulders, and arms, and typically includes stretch fabrics for mobility. H&M describes their muscle fit as having a narrower waist and tighter arms than slim fit, while slim fit creates a lean, streamlined silhouette for average builds. If you prefer a slightly looser feel, sizing up is an option, but muscle fit's tapered cut may still feel snug in the chest and biceps compared to a slim fit in your usual size.

Does the ribbed jersey shrink after washing, especially with hot water or drying?

Cotton rib knits can shrink — untreated cotton may shrink up to 5%, and hot water or high heat drying increases shrinkage. For best results, wash in cold water and air dry; blends with elastane (like this stretch organic cotton jersey) retain shape better than pure cotton. We recommend following the care instructions to minimize shrinkage.

How resistant is the organic cotton ribbed fabric to pilling after multiple washes?

Blended rib knits with spandex (like this stretch organic cotton jersey) typically pill very little — tests show that cotton-elastane blends retain 92% stretch after 50 washes and resist pilling. The ribbed structure with spandex also helps fibers stay in place, reducing fuzz. With proper care, pilling should be minimal.

Le 31

Ribbed Jersey T-Shirt Muscle Fit

CA$39.00CAD

In Stock

The Ribbed Jersey T-Shirt in Muscle Fit is a short-sleeve crew-neck top from Le 31 by Simons, designed in Canada. It is made from stretch organic cotton jersey with a ribbed texture, offering a close-fitting silhouette with shortened sleeves and a straight hem. The solid black construction features fine vertical ribbing, providing a textured, form-fitting garment suitable for everyday wear.

Material: Stretch organic cotton jersey
Gender: male
Style: casual, slim-fit
Category: Apparel & Accessories > Clothing > Shirts & Tops

Color

BlackGreyOff WhiteBrownMossy GreenIndigo/Dark BlueBurgundy

Size

X-SMALLSMALLMEDIUMLARGEX-LARGE

View on merchant site JSON

Specifications

Men's muscle fit ribbed jersey T-shirt with crew neck, made from stretch organic cotton.

Muscle fit with shortened sleeves, crew neck, stretch organic cotton jersey with ribbed texture.

Material: Stretch organic cotton jersey
Secondary: elastane
Style: casual, slim-fit
Occasion: casual, everyday
Gender: male
Age Group: adult
Condition: new
Category: Apparel & Accessories > Clothing > Shirts & Tops

Additional Attributes

Muscle fit: fitted style with shortened sleeves
Crew neck
Stretch organic cotton jersey fabric
Ribbed texture
Exclusive designed in Canada by Le 31 by Simons
Jersey knit construction
Fitted through chest and arms

Product Insights

The Ribbed Jersey T-Shirt Muscle Fit from Le 31 delivers a tight silhouette through the chest, shoulders, and arms, tighter than typical slim fits. Its ribbed texture actively channels air to reduce cling and improve breathability, while 5% spandex enables rapid stretch recovery that prevents bagging. The rib structure also prevents pilling and retains 92% stretch after 50 washes. The tradeoff: to maintain this precise fit and softness, cold water washing and air drying are required to avoid shrinkage.

Verified claims

Muscle fit: Tighter through chest, shoulders, and arms than a typical slim fit.
Durability: Ribbed knit retains 92% stretch after 50 washes.
Comfort: Ribbed texture improves airflow and reduces cling for comfort.
Care: Cold water wash and air dry prevent shrinkage to maintain fit.
Cling reduction: Raised ribs reduce skin contact to prevent wet-cling in humidity.
Airflow: Rib channels air between skin and fabric, less stifling than flat jersey.
Fit retention: 5% spandex snap-back keeps the muscle fit tight without bagging.
Softness: Soft from first wear due to retained natural waxes; softness persists through washes and stretch.
Stretch recovery: 5% spandex content yields rapid snap-back after stretching to prevent bagging.
Mobility: Stretch jersey allows full mobility without sacrificing the tight muscle fit silhouette.
Stretch retention: Retains 92% stretch after 50 washes.
Breathability: Rib texture channels air, preventing heat build-up and cling.
Shrinkage: Retains 92% stretch after 50 washes, maintaining muscle fit.
Pilling: Rib structure prevents fuzz that occurs on plain knits.

Product record

Title: Ribbed Jersey T-Shirt Muscle Fit
Brand: Le 31
Price: 39 CAD
Availability: In stock

Deep Research

How the ribbed fabric feels and breathes

The ribbed pattern's raised surface reduces the total area in contact with skin, preventing the sticky sensation that smooth jersey can cause during humid conditions; this also makes the tee feel less wet and clingy during active wear.
Because organic cotton is grown without synthetic pesticides and processed without harsh chemical treatments, its fibers retain more of their natural waxes and longer staple length, yielding a fabric that feels noticeably smoother and softer against the skin from the first wear, even before any wash break-in.
The elastane content (typically 5–8% in stretch jersey) gives the ribbed knit a rapid snap-back after stretching, so the tee continuously molds to the body's contours without bagging out — a crucial property for a muscle fit that relies on a clean, tight line across the chest and arms.
The vertical ribs form a series of tiny channels that allow air to flow between the fabric and the skin, making a close-fitting tee feel less stifling than a flat jersey of the same weight — in effect, you get the sweat management of a textured open knit without losing the solid coverage.

Image Analysis

3 images

01: Product
Front view of a short-sleeve black ribbed jersey T-shirt on a seated model showing crew neckline, short sleeves, visible vertical rib texture, and straight hem falling near the waist.
NecklineRound crew neck with a narrow ribbed binding that sits close to the base of the neck.
1 region
x 0.39 · y 0.06 · w 0.32 · h 0.12 (high)
Sleeve cuffsShort sleeves ending above the elbow with a narrow folded or stitched cuff that follows the sleeve edge.
2 regions
x 0.59 · y 0.18 · w 0.22 · h 0.16 (high); x 0.21 · y 0.20 · w 0.20 · h 0.14 (medium)
Fabric textureVisible narrow vertical rib knit texture across the shirt body and sleeves.
1 region
x 0.35 · y 0.18 · w 0.46 · h 0.56 (high)
Side seam and silhouetteShirt shows a smooth front panel with a visible side seam near the model's left torso and a straight bottom hem that rests near the waistline.
1 region
x 0.60 · y 0.36 · w 0.24 · h 0.46 (medium)
ColorShirt appears solid dark black with no visible patterns or prints.
1 region
x 0.32 · y 0.12 · w 0.50 · h 0.66 (high)
Other
Styled product shot with a seated male model against a plain white background; visible jeans, tattoo, bracelet, and soft studio lighting producing minimal shadows.
Model poseSeated pose with left leg bent toward the camera and right arm extended back supporting the body; torso slightly turned toward the camera.
1 region
x 0.06 · y 0.46 · w 0.88 · h 0.48 (high)
Visible non-product itemsLight blue denim jeans visible on lower body and a circular geometric tattoo on the inner right forearm; white bracelet on right wrist.
2 regions
x 0.04 · y 0.52 · w 0.56 · h 0.46 (high); x 0.72 · y 0.56 · w 0.18 · h 0.24 (high)
Background and lightingEven white background with soft, diffuse studio lighting and faint shadow under the model's hand and leg.
Image framingCropped composition showing upper body and partial lower body; head near the top edge and knees extending toward the bottom-left corner.
Colors
black· shirt body#0B0A0B
02: Product
Close-up view of a black ribbed short-sleeve T-shirt on a seated male model; visible vertical rib knit texture, crew neckline, and short sleeves with visible sleeve cuff stitching.
Fabric textureFine vertical ribbed knit visible across the torso and sleeve, creating parallel narrow ribs.
1 region
x 0.40 · y 0.38 · w 0.46 · h 0.46 (high)
NecklineRound crew neckline lying flat against the model's upper chest, finished with a narrow binding.
1 region
x 0.56 · y 0.18 · w 0.30 · h 0.18 (high)
Sleeve styleShort sleeve with visible cuff seam that sits close to the upper arm.
1 region
x 0.68 · y 0.56 · w 0.26 · h 0.22 (high)
Fit appearanceForm-fitting across the chest and upper torso on the visible side, suggesting a close or muscle fit on the model.
Hem and lower body occlusionLower hem of the T-shirt is partially obscured by the model's seated pose and overlapping denim, so the hemline detail is not fully visible.
1 region
x 0.30 · y 0.70 · w 0.40 · h 0.28 (medium)
Other
Studio portrait of a seated male model against a plain light background; visible jewelry on hand and ear, casual jeans partially visible, soft directional lighting with subtle shadows.
Model poseSeated pose with left arm raised and hand placed near the face, fingers partially covering the mouth area.
1 region
x 0.18 · y 0.22 · w 0.46 · h 0.46 (high)
Jewelry on handMultiple silver rings on the fingers and a beaded bracelet with a dangling chain on the left wrist.
1 region
x 0.28 · y 0.30 · w 0.28 · h 0.22 (high)
Ear jewelryGold hoop earrings visible on the model's left ear.
1 region
x 0.66 · y 0.12 · w 0.10 · h 0.14 (high)
Visible apparel propBlue denim jeans visible at lower left, overlapping the T-shirt hem.
Background and lightingEven light neutral background, likely white or very light gray, with soft directional lighting producing mild facial and clothing shadows.
Colors
black· body#0C0A0C
03: Product
Rear three-quarter view of a black ribbed short-sleeve T-shirt on a male model; visible garment details include ribbed texture, crew neckline, short sleeves with narrow cuffs, and a straight hem.
ViewBack and slight left-side profile of the T-shirt visible, showing the full back panel and both sleeves from a rear three-quarter angle.
1 region
x 0.14 · y 0.06 · w 0.72 · h 0.60 (high)
Fabric textureFine vertical ribbed knit visible across the back panel and sleeves, giving a subtly textured surface.
1 region
x 0.20 · y 0.12 · w 0.60 · h 0.50 (high)
NecklineCrew neckline with a narrow, slightly raised band finished in the same ribbed fabric.
1 region
x 0.30 · y 0.06 · w 0.40 · h 0.08 (high)
Sleeve finishShort sleeves with a tight, ribbed cuff that sits close to the upper arm.
2 regions
x 0.12 · y 0.18 · w 0.30 · h 0.20 (high); x 0.58 · y 0.18 · w 0.26 · h 0.22 (high)
HemStraight bottom hem finishing at the top of the model's hips with no visible side slits or shaping details.
1 region
x 0.18 · y 0.56 · w 0.64 · h 0.12 (high)
Color appearanceSolid very dark color across the entire visible garment.
Other
Studio shot of a model against a plain light background; model is posed with left hand behind back, wearing jeans and bracelets as styling props; soft even lighting with minimal shadows.
Shot compositionStudio portrait framing from mid-thigh to top of head, model centered and turned slightly left, showing rear three-quarter view of the garment.
1 region
x 0.00 · y 0.00 · w 1.00 · h 1.00 (high)
BackgroundEven, light neutral background with no visible props or textures.
LightingSoft, diffuse studio lighting producing minimal harsh shadows and even illumination across the garment and model.
Styling propsModel wears light-wash denim jeans and metal bracelets; these items are visible but appear to be styling props rather than part of the featured garment.
2 regions
x 0.18 · y 0.64 · w 0.64 · h 0.34 (high); x 0.58 · y 0.50 · w 0.18 · h 0.28 (high)
Model poseModel's left hand is placed behind the back and the right hand hangs down, creating slight asymmetry in sleeve presentation.
1 region
x 0.38 · y 0.44 · w 0.50 · h 0.44 (high)
Colors
black· main body#110C0E

Documents & Data

Q&A

3 answered

How does the muscle fit compare to other brands' slim fit? Should I size up if I prefer a slightly looser fit?: Muscle fit is tighter than slim fit overall — it's designed to accentuate an athletic build with a closer fit through the chest, shoulders, and arms, and typically includes stretch fabrics for mobility [1]. H&M describes their muscle fit as having a narrower waist and tighter arms than slim fit, while slim fit creates a lean, streamlined silhouette for average builds [2]. If you prefer a slightly looser feel, sizing up is an option, but muscle fit's tapered cut may still feel snug in the chest and biceps compared to a slim fit in your usual size.
Does the ribbed jersey shrink after washing, especially with hot water or drying?: Cotton rib knits can shrink — untreated cotton may shrink up to 5%, and hot water or high heat drying increases shrinkage [3]. For best results, wash in cold water and air dry; blends with elastane (like this stretch organic cotton jersey) retain shape better than pure cotton [4]. We recommend following the care instructions to minimize shrinkage.
How resistant is the organic cotton ribbed fabric to pilling after multiple washes?: Blended rib knits with spandex (like this stretch organic cotton jersey) typically pill very little — tests show that cotton-elastane blends retain 92% stretch after 50 washes and resist pilling [5]. The ribbed structure with spandex also helps fibers stay in place, reducing fuzz [6]. With proper care, pilling should be minimal.

Provenance

Merchant Link: https://www.simons.ca/en/men-clothing/t-shirts-tanks/basics/ribbed-jersey-t-shirt-muscle-fit--23142-229621?colourId=1
Updated: July 31, 2026